Android: Update upstream tags to android-4.3_r2.2

Change-Id: Idf16dd6996cd467dec25fd32810059423bcb0320
Android: Add pigz repository

 * pigz is an optimized gzip which uses multiple cores
 * We're using pigz for compressed Nandroid support in recovery

Change-Id: I61e690bc6ea5dcf19d92865e4db0c0887cb94a90